[testlib] Fix mail monkeypatch in testlib
ea26eb5fd388 in stable introduce monkeypatching of SendMailOp.commit_event
8bc6eac1fac1 in default rename SendMailOp.commit_event to postcommit_event
d7f5d873e1b8 merge stable in default without handling the rename.
[MESSAGES CONTROL]
disable-msg = C0301
[VARIABLES]
# Enable / disable this checker
enable-variables = yes
additional-builtins = _, display_name
[BASIC]
required-attributes=
attr-rgx = (w|[a-z_][a-z0-9_]{2,30})
variable-rgx = (w|[a-z_][a-z0-9_]{2,30})$
argument-rgx = (w|[a-z_][a-z0-9_]{2,30})$
[TYPECHECK]
generated-members=debug,info,notice,warning,error,critical,exception